This past weekend I was working up some loads to verify my previous results. I was loading for a Rem 700 26" barrel in 1/12 twist. I loaded from a range of 41grn to 45.5 grn IMR 4895 pushing a 155grn AMAX. I moved up in .5 grn increments and shot 9 rounds per increment. The results show that 41-42.5grns yielded decent groups at approxiamately .5 MOA @ 100yrds. 43-43.5 was shooting .25-.30 inch groups. As I moved up to 45.5grns, the groups were opening up dramatically. At 45.5grns, I was shooting 1" groups.
So it seems that the load for my gun is at around 43-43.5grn. This seems awefully low and I'm not sure if the velocity will get it to 1k yards.
I'm wondering what I can do to maintain accuracy while upping the velocity?
Some details of the gun
Rem 700 action blueprinted with 26" Krieger stainless steel barrel in AICS stock.
Hornady A-Max 155grn
Winchester .308 New cases (only neck sized out of the box)
IMR 4895
CCI 200 Primer
Bullet is seated exactly on the lands.
So it seems that the load for my gun is at around 43-43.5grn. This seems awefully low and I'm not sure if the velocity will get it to 1k yards.
I'm wondering what I can do to maintain accuracy while upping the velocity?
Some details of the gun
Rem 700 action blueprinted with 26" Krieger stainless steel barrel in AICS stock.
Hornady A-Max 155grn
Winchester .308 New cases (only neck sized out of the box)
IMR 4895
CCI 200 Primer
Bullet is seated exactly on the lands.